Single axis joint



FIG. 1 is a perspective view of a single axis joint according to the present invention;

FIG. 2 is a first side view of the single axis joint of FIG. 1;

FIG. 3 is a second side view opposite of the first side view of FIG. 2;

FIG. 4 is a third side view of the single axis joint of FIG. 1;

FIG. 5 is a fourth side view opposite of the third side view of FIG. 4; and,

FIG. 6 is a top view of the single axis joint of FIG. 1.

The broken lines immediately adjacent the surface shading in FIGS. 1-6 represent the bounds of the claim. The broken lines showing a mop head and a handle in FIG. 1 are included for the purpose of illustrating environmental structure. None of the broken lines form part of the claimed design. 

The ornamental design for the single axis joint, as shown and described. 